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VSG/VSSG • Installation, Operation and Maintenance Manual •Vilter/Emerson • 35391SSG
Section 5 • Maintenance/Service
26. If equipped with C-fl ange, install C-fl ange coupling,
refer to C-fl ange Coupling Replacement procedure.
27. Install coupling, see Drive Coupling Installation and
Alignment procedure .
28. Install coupling guard.
29. Install nuts and bolts to secure discharge pipe to oil
separator and compressor.
30. Tighten nuts on ‘discharge pipe-to-compressor
fl ange’ fi rst, then tighten nuts on ‘discharge pipe-
to-oil separator fl ange’, see Appendix A.
31. Install nuts to secure suction strainer/check valve
assembly to compressor and suction stop valve.
32. Tighten nuts on ‘suction strainer/check valve as-
sembly-to-compressor’ fi rst, then tighten nuts on
‘suction strainer/check valve assembly-to-suction
stop valve’, refer to Appendix A.
33. Install all lines to compressor.
34. Install all cables to sensors on compressor and
actuator.
35. Perform leak check, see Compressor Unit Leak
Check procedure.
personnel, remove compressor from frame.
17. Remove shims and spherical washers from com-
pressor mounting locations.
18. Inspect shims and spherical washers for damage,
replace as required.
INSTALLATION
19. Install shims and spherical washers on compressor
mounting locations, see Figure 5-10.
20. Install appropriate lifting eyes on top of compressor.
21. Using appropriate lifting device, position compres-
sor on compressor mounting locations on frame.
22. Loosely install studs, lock washers, fl at washers and
nuts to secure compressor to frame until alignment
is correct.
23. Check compressor for soft foot. Add or remove
shims as required until measurements are within
+/- 0.002”.
24. Tighten nuts to secure compressor to frame, refer
to Appendix A.
25. If equipped with C-fl ange, install bolts to se-
cure C-fl ange to compressor. Tighten bolts, see
Appendix A.
Figure 5-10. Compressor Replacement and Hardware Assembly (Models 2401-3001 Shown)
Nut
Lock Washer
Flat Washer
Spherical
Washer
Assembly
Stud
Flat Washer
Lock Washer
Nut
Shim
Frame
Compressor